278 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 6 



Angulogerina albatrossi Cushman, var. hirsuta Todd, new variety 



Plate35, Fig. 4 



Variety differing from the typical form in the ornamentation, consist- 

 ing of numerous high, sharp costae on the early part of the test, and 

 prominent, thickly-set spines over the later two or three chambers and 

 even the apertural neck, and in the proportionately stouter and more 

 sharply triangular, but not carinate, section of the test. 



Holotype (AHF no. 61 ) from Station 406, off the Galapagos Islands. 



This variety exhibits great variation in size from one locality to 

 another. The specimens from Station 406 are fairly uniform: 1.00-1.25 

 mm in length and 0.50-0.55 mm in breadth. Those from the other sta- 

 tions: 5, 403, 412, and 473, are much smaller: 0.60-0.80 mm in length 

 and 0.25-0.40 mm in breadth. In addition, the proportion of costae and 

 spines varies greatly, and sometim.es the initial end also bears spines. 



From the material available it seems related to A. albatrossi j especially 

 the microspheric form of that species, but it may prove to be a distinct 

 species. 



Distribution.— The type locality is 1° 03' 30" S., 90° 17' 30'' W. in 

 60 fms. Additional records include one off San Pedro in 38 fms, and 

 four off the Galapagos Islands at depths from 9 to 111 fms. 



Angulogerina albatrossi Cushman, var. ornata Cushman 

 Plate 35, Fig. 5 



Angulogerina albatrossi Cushman, var. ornata Cushman, Contr. 

 Cushman Lab. Foram. Res., vol. 8, 1932, p. 45, pi. 6, figs. 13, 14; U. S. 

 Nat. Mus. Bull. 161, pt. 3, 1942, p. 57, pi. 15, figs. 10, 11. 



Variety differing from the typical form in the ornamentation, consist- 

 ing of veiy fine costae, low, yet sharp, slightly wavy in pattern, curving, 

 branching, and intercalating, not continuous across the sutures, and usu- 

 ally faint or absent on the last-formed chamber. The strength of the 

 ornamentation varies considerably, the costae being almost obliterated on 

 some specimens, yet with the characteristic wavy pattern still visible. 



This variety shows the same sort of variation in shape of test in the 

 microspheric and megalospheric forms as that shown by the species. Two 

 specimens are figured to illustrate this. 



A. albatrossi var. ornata Cushman was described from the same sta- 

 tion as the species off the west coast of Mexico, and has been recorded as 

 rare from the Tropical Pacific. It occurs in few numbers with the typical 

 form at two of its stations, 223 and 2084, and at the following additional 



